Radiator cooling fan



FIG. 1 is a front elevational view of a radiator cooling fan showing our new design;

FIG. 2 is a side elevational view thereof;

FIG. 3 is a rear elevational view thereof; and

FIG. 4 is a cross sectional view taken on line 4--4 of FIG. 3. 

The ornamental design for a radiator cooling fan, as shown. 